Warum erhalte ich die Fehlermeldung „Unable to validate the following destination configurations“, wenn ich eine Amazon S3-Ereignisbenachrichtigung erstelle?

Wie kann ich den Fehler “Lambda does not have permission to access the ECR image...” (Lambda hat keine Berechtigung, auf das ECR-Image zuzugreifen...) für eine Lambda-Funktion mit einem Container-Image beheben?

Wie vermeide ich den Fehler „Unable to validate the following destination configurations“ bei Lambda-Ereignisbenachrichtigungen in CloudFormation?

Wie behebe ich den Fehler „Unable to validate the following destination configurations“ in AWS CloudFormation?

I'm following the [Running a sample application with ROS Melodic and Gazebo 9](https://docs.aws.amazon.com/robomaker/latest/dg/run-hello-world-ros.html) tutorial and I have made three directories, the first one, called HelloWorldSampleAppROSMelodicGazebo9 that contains only the Dockerfile for the base image, the second one, called HelloWorldSampleAppROSMelodicGazebo9RobotApp, that contains the Dockerfile for the robotic application and the robot-entrypoint.sh and the last one, HelloWorldSampleAppROSMelodicGazebo9SimApp, with the Dockerfile for the simapp and the simulation-entrypoint.sh file.

The point is that, when I run the following command:
> $ docker build -t helloworldsampleapprosmelodicgazebo9robotapp:latest image/.

inside the folder for the robot image, I obtain the following error:

> unable to prepare context: path "image/." not found

The same happens when I try to build the docker image for the simapp. 
What is the source of this error?

Problem while visualizing Robot in Gazebo: unable to prepare context: path "image/." not found

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